Slide 1

Slide 1 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Service Mesh Explained Frank Munz Senior Technical Evangelist Amazon Web Services @frankmunz

Slide 2

Slide 2 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. About me • Software Architect / DevOps Engineer • Technical Evangelist @ AWS • Published an AWS book • Containers, serverless and a sprinkle of ML & big / fast data @frankmunz

Slide 3

Slide 3 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. 10+ Years Back in Time: Enterprise Service Bus + SOA ESB = Service Virtualization Layer • Reduces complexity #cx: squared -> linear with ESB • VETO pattern = Validate, Enrich, Transform, Operate • CCC = location transparency, throttling, monitoring, security, audit

Slide 4

Slide 4 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Splitting the Monolith – A. Cockroft @ AWS https://youtu.be/aBcG57Gw9k0

Slide 5

Slide 5 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Enterprise SW Modernization -> Microservices Building Blocks / Technical Architecture • Containers • Serverless / AWS Lambda • Other cloud services • Do NOT stuff everything into a container! • AWS API Gateway, Kinesis, Aurora, Dynamo DB, etc. -> Container / K8s will not make other cloud services redundant

Slide 6

Slide 6 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Challenges of Containers at Scale • More transient • More distributed and complex • Networking • Scheduling / Resource Management • Not virtualized, but isolated: containers share Linux kernel -> Tooling and orchestration required

Slide 7

Slide 7 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. ECS Easiest way to deploy and manage containers at scale Integration with entire AWS platform ALB, Auto Scaling, Batch, Elastic Beanstalk, CloudFormation, CloudTrail, CloudWatch Events, CloudWatch Logs, CloudWatch Metrics, ECR, EC2 Spot, IAM, NLB, Parameter Store, and VPC Scales to support clusters of any size Service integrations (like ALB and NLB) are at container level 1 2 3

Slide 8

Slide 8 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Kubernetes entered the stage

Slide 9

Slide 9 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. … and devops love Kubernetes

Slide 10

Slide 10 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Open source container management platform Helps you run containers at scale Gives you primitives for building modern applications What is Kubernetes (K8s)?

Slide 11

Slide 11 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. “Run Kubernetes for me.”

Slide 12

Slide 12 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Availability Zone 1 Availability Zone 2 Availability Zone 3 Kubectl EKS Architecture

Slide 13

Slide 13 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. EKS is Kubernetes Certified + Heptio IAM Authenticator (open sourced) VPC Networking (open sourced)

Slide 14

Slide 14 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Kubernetes Ressources (incomplete list) Ressource Pod Basic K8s unit, co-located containers Namespace Non-overlapping group of ressources Replica Set Keeps pod replicas running Service Exposes pod at single stable IP Deployment Rolling update of pods Ingress Expose service with static IP to external client Admission Controller Run code after API request, e.g. inject sidecar

Slide 15

Slide 15 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. OSS Hystrix: code changes required Service Mesh: decentral, language agnostic, dumb endpoints https://www.infoq.com/articles/microservices-post-kubernetes Shift in Infrastructure Logic ESB: clustered monolith

Slide 16

Slide 16 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Istio Service Mesh • Connect, secure, and observe services • Shift in where functionality is located • Istio control plane • Data plane = set of all proxies • Envoy proxy as sidecar in K8s pod • Automatic / manual injection of proxy

Slide 17

Slide 17 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Istio Service Mesh with Envoy Proxy Add a 5s delay to 10% of all requests

Slide 18

Slide 18 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. User Based Routing Traffic Shifting

Slide 19

Slide 19 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Envoy Proxy • Level 7 proxy • HTTP, HTTP/2, gRPC, AWS Dynamo DB, MongoDB • C++11 code base , only 8 MB (statically linked) • No language or framework dependencies • No code changes

Slide 20

Slide 20 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Service Mesh Cross Cutting Concerns such as retries, timeouts, circuit breaking, fault injection, client-side load balancing, service discovery, security, metrics-collection, A/B deployments, and traffic mirroring/ routing

Slide 21

Slide 21 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Service Mesh But Docker / Kubernetes can do rolling updates! Yes, but Istio sparates traffic flow from replica deployment

Slide 22

Slide 22 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. A bath tub full of cold water ? K8s rolling update 25% 1 pod at a time … or just wetten your feet? Service Mesh 3% Traffic routing ! ! ! " # ! $❄$❄$❄ Fancy a Swim in the Arctic Sea ? Blue / Green 100% All services at once Microservices Update Strategies

Slide 23

Slide 23 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved.

Slide 24

Slide 24 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Install Istio with Helm $ helm install --wait --name istio \ --namespace istio-system \ install/kubernetes/helm/istio \ --set grafana.enabled=true \ --set tracing.enabled=true \ --set servicegraph.enabled=true $ # K8s label turn on automatic sidecar injection $ kubectl label namespace default istioinjection=enabled

Slide 25

Slide 25 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Grafana

Slide 26

Slide 26 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Jaeger

Slide 27

Slide 27 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Servicegraph

Slide 28

Slide 28 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Customers

Slide 29

Slide 29 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Snap @AWS Summit in New York 2018 https://youtu.be/mCVdcz01Z-g?t=2052

Slide 30

Slide 30 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. AWS App Mesh

Slide 31

Slide 31 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. App Mesh App Mesh is PREVIEW as of 03/2019 Uses on Envoy proxy, but implements own control plane • Envoy is a battle proved service mesh proxy • App Mesh works across clusters and across EKS and ECS (also with Fargate) • Will support bringing your own Envoy images and Istio Mixer in the future.

Slide 32

Slide 32 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. App Mesh Ressources App Mesh Ressource Virtual Node Logical pointer to a particular task group (ECS service / Kubernetes deployment). Uses DNS service discovery name for your task group Virtual Router Handles traffic for one or more service names within your mesh. Routes Associated with a virtual router, and it directs traffic that matches a service name prefix to one or more virtual nodes.

Slide 33

Slide 33 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. App Mesh Architecture

Slide 34

Slide 34 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. GA / Post GA Roadmap is Public https://github.com/awslabs/aws-app-mesh-examples

Slide 35

Slide 35 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Summary • Architect wisely. • Running K8s is hard, run it in the cloud & use K8s service like AWS EKS • Service Meshes complement K8s • AWS EKS is unforked, upstream K8s. • You can install open-source Istio with Envoy as a helm chart on EKS or • AWS App Mesh (preview) uses Envoy

Slide 36

Slide 36 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. App Mesh References Product overview https://aws.amazon.com/app-mesh Documentation https://docs.aws.amazon.com/app-mesh/index.html Examples https://github.com/awslabs/aws-app-mesh-examples Issues & Roadmap https://github.com/awslabs/aws-app-mesh-examples/issues

Slide 37

Slide 37 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. General References Introduction to modern network load balancing and proxying https://blog.envoyproxy.io/introduction-to-modern-network-load-balancing-and-proxying- a57f6ff80236 InfoQ: Microservices in a Post-Kubernetes Era https://www.infoq.com/articles/microservices-post-kubernetes Getting Started with Istio on Amazon EKS https://aws.amazon.com/blogs/opensource/getting-started-istio-eks/ EKS Workshop (K8s, Helm, CI/CD, Grafana, Kabana) https://eksworkshop.com/introduction/ Istio Book https://www.manning.com/books/istio-in-action AWS EKS Documentation https://docs.aws.amazon.com/eks/latest/userguide/what-is-eks.html Envoy with DynamoDB https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/dynamo

Slide 38

Slide 38 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Open-source Istio and Enovy on AWS EKS Video https://www.youtube.com/watch?v=fDmJf9kWFws

Slide 39

Slide 39 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Please rate this session:

Slide 40

Slide 40 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Tomorrow: EKS Workshop

Slide 41

Slide 41 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. SUMMIT Cape Town, 11 July 2019, CTICC

Slide 42

Slide 42 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved. Register for free:

Slide 43

Slide 43 text

© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Thank You! @frankmunz